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12530430 = 2335114219
BaseRepresentation
bin101111110011…
…001011111110
3212120121112000
4233303023332
511201433210
61124323130
7211335603
oct57631376
925517460
1012530430
117089330
1242434a6
132799573
1419426aa
151177ac0
hexbf32fe

12530430 has 64 divisors (see below), whose sum is σ = 36460800. Its totient is φ = 3036960.

The previous prime is 12530429. The next prime is 12530459. The reversal of 12530430 is 3403521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 861 + ... + 5079.

It is an arithmetic number, because the mean of its divisors is an integer number (569700).

Almost surely, 212530430 is an apocalyptic number.

12530430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12530430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18230400).

12530430 is an abundant number, since it is smaller than the sum of its proper divisors (23930370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12530430 is a wasteful number, since it uses less digits than its factorization.

12530430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246 (or 4240 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 12530430 is about 3539.8347419053. The cubic root of 12530430 is about 232.2676137987.

Adding to 12530430 its reverse (3403521), we get a palindrome (15933951).

The spelling of 12530430 in words is "twelve million, five hundred thirty thousand, four hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 90 99 110 135 165 198 270 297 330 495 594 990 1485 2970 4219 8438 12657 21095 25314 37971 42190 46409 63285 75942 92818 113913 126570 139227 189855 227826 232045 278454 379710 417681 464090 569565 696135 835362 1139130 1253043 1392270 2088405 2506086 4176810 6265215 12530430